Dimensions - Hot Finished Circular Hollow Sections

Welcome to our Hot Finished Circular Hollow Section dimensions page! Here you'll find dimensions for all UK Hot Finished Circular Hollow Section steel sections described by the Steelwork Design Guide to BS5950-1:2000, Volume 1, Section Properties, Member Capacities, 7th Edition (also known as The Blue Book). Sort the table below according to any property and select a CAD file to download using the reference links in the left-most column. You can also purchase all our CAD data in one easy download, containing the sections as individual files and AutoCAD Design Center files or Microstation cel libraries - just click on the Shop button in the navigation above.

Section Reference Outside Diameter Thickness Mass per Metre Area of Section
  D
mm
t
mm
kg/m A
cm2
26.9x3.2 26.9 3.2 1.87 2.38
33.7x2.6 33.7 2.6 1.99 2.54
33.7x3.2 33.7 3.2 2.41 3.07
33.7x4.0 33.7 4 2.93 3.73
42.4x2.6 42.4 2.6 2.55 3.25
42.4x3.2 42.4 3.2 3.09 3.94
42.4x4.0 42.4 4 3.79 4.83
42.4x5.0 42.4 5 4.61 5.87
48.3x3.2 48.3 3.2 3.56 4.53
48.3x4.0 48.3 4 4.37 5.57
48.3x5.0 48.3 5 5.34 6.8
60.3x3.2 60.3 3.2 4.51 5.74
60.3x4.0 60.3 4 5.55 7.07
60.3x5.0 60.3 5 6.82 8.69
76.1x2.9 76.1 2.9 5.24 6.67
76.1x3.2 76.1 3.2 5.75 7.33
76.1x4.0 76.1 4 7.11 9.06
76.1x5.0 76.1 5 8.77 11.2
88.9x3.2 88.9 3.2 6.76 8.62
88.9x4.0 88.9 4 8.38 10.7
88.9x5.0 88.9 5 10.3 13.2
88.9x6.3 88.9 6.3 12.8 16.3
114.3x3.2 114.3 3.2 8.77 11.2
114.3x3.6 114.3 3.6 9.83 12.5
114.3x4.0 114.3 4 10.9 13.9
114.3x5.0 114.3 5 13.5 17.2
114.3x6.3 114.3 6.3 16.8 21.4
139.7x5.0 139.7 5 16.6 21.2
139.7x6.3 139.7 6.3 20.7 26.4
139.7x8.0 139.7 8 26 33.1
139.7x10.0 139.7 10 32 40.7
168.3x5.0 168.3 5 20.1 25.7
168.3x6.3 168.3 6.3 25.2 32.1
168.3x8.0 168.3 8 31.6 40.3
168.3x10.0 168.3 10 39 49.7
168.3x12.5 168.3 12.5 48 61.2
193.7x5.0 193.7 5 23.3 29.6
193.7x6.3 193.7 6.3 29.1 37.1
193.7x8.0 193.7 8 36.6 46.7
193.7x10.0 193.7 10 45.3 57.7
193.7x12.5 193.7 12.5 55.9 71.2
219.1x5.0 219.1 5 26.4 33.6
219.1x6.3 219.1 6.3 33.1 42.1
219.1x8.0 219.1 8 41.6 53.1
219.1x10.0 219.1 10 51.6 65.7
219.1x12.5 219.1 12.5 63.7 81.1
219.1x14.2 219.1 14.2 71.8 91.4
219.1x16.0 219.1 16 80.1 102
244.5x8.0 244.5 8 46.7 59.4
244.5x10.0 244.5 10 57.8 73.7
244.5x12.5 244.5 12.5 71.5 91.1
244.5x14.2 244.5 14.2 80.6 103
244.5x16.0 244.5 16 90.2 115
273.0x6.3 273 6.3 41.4 52.8
273.0x8.0 273 8 52.3 66.6
273.0x10.0 273 10 64.9 82.6
273.0x12.5 273 12.5 80.3 102
273.0x14.2 273 14.2 90.6 115
273.0x16.0 273 16 101 129
323.9x6.3 323.9 6.3 49.3 62.9
323.9x8.0 323.9 8 62.3 79.4
323.9x10.0 323.9 10 77.4 98.6
323.9x12.5 323.9 12.5 96 122
323.9x14.2 323.9 14.2 108 138
323.9x16.0 323.9 16 121 155
355.6x14.2 355.6 14.2 120 152
355.6x16.0 355.6 16 134 171
406.4x6.3 406.4 6.3 62.2 79.2
406.4x8.0 406.4 8 78.6 100
406.4x10.0 406.4 10 97.8 125
406.4x12.5 406.4 12.5 121 155
406.4x14.2 406.4 14.2 137 175
406.4x16.0 406.4 16 154 196
457.0x8.0 457 8 88.6 113
457.0x10.0 457 10 110 140
457.0x12.5 457 12.5 137 175
457.0x14.2 457 14.2 155 198
457.0x16.0 457 16 174 222
508.0x10.0 508 10 123 156
508.0x12.5 508 12.5 153 195
508.0x14.2 508 14.2 173 220
508.0x16.0 508 16 194 247